This is currrently loaded smokeless ammunition for modern reproduction firearms chambered 50-90 Sharps AKA 50x2 1/2" Sharps. Be sure the manufacturer of your rifle has rated it for smokeless ammunition. This ammo is loaded using .512" diameter 540 grain cast bullets (item #512530) and properly headstamped cases (item #STR5090).
NOTE: All ammunition is shipped via FedEx or UPS Ground "Adult Signature Required" ONLY. So be sure you have a physical address on your order as they will not deliver to a P.O. Box.